SdlScreenFadeView.h

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// SdlScreenFadeView.h
//
// Copyright (c) 2013 Michael Imamura.
//
// Licensed under GrokkSoft HoverRace SourceCode License v1.0(the "License");
// you may not use this file except in compliance with the License.
//
// A copy of the license should have been attached to the package from which
// you have taken this file. If you can not find the license you can not use
// this file.
//
//
// The author makes no representations about the suitability of
// this software for any purpose.  It is provided "as is" "AS IS",
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
//
// See the License for the specific language governing permissions
// and limitations under the License.

#pragma once

#include "SdlDisplay.h"
#include "SdlView.h"

#if defined(_WIN32) && defined(HR_ENGINE_SHARED)
#   ifdef MR_ENGINE
#       define MR_DllDeclare   __declspec( dllexport )
#   else
#       define MR_DllDeclare   __declspec( dllimport )
#   endif
#else
#   define MR_DllDeclare
#endif

namespace HoverRace {
    namespace Display {
        class ScreenFade;
    }
}
struct SDL_Surface;

namespace HoverRace {
namespace Display {
namespace SDL {

class MR_DllDeclare SdlScreenFadeView : public SdlView<ScreenFade>
{
    typedef SdlView<ScreenFade> SUPER;
    public:
        SdlScreenFadeView(SdlDisplay &disp, ScreenFade &model) :
            SUPER(disp, model), opacityChanged(true), computedAlpha(0) { }
        virtual ~SdlScreenFadeView() { }

    public:
        virtual void OnModelUpdate(int prop);

    public:
        virtual Vec3 Measure();
        virtual void PrepareRender();
        virtual void Render();

    private:
        void Update();

    private:
        bool opacityChanged;
        MR_UInt8 computedAlpha;
};

}  // namespace SDL
}  // namespace Display
}  // namespace HoverRace

#undef MR_DllDeclare